baber/WOPTO huggingface dataset:
Patent GB-848586-A (GB)
Title: Improvements in or relating to multi-purpose electrodes for electrochemical processes
IPC: C25B11/00
Filed: 1958-04-29
Abstract: 848,586. Electrolytic apparatus; batteries; fuel cells. SIEMENS & HALSKE G.m.b.H. April 29, 1958 [May 8, 1957], No. 13607/58. Classes 41 and 53 An electrode for electrolysis or for use in fuel cells comprises a core consisting of electrically conductive or semi-conductor particles and is provided with a firmly adhering covering of electrically conducting or non-conducting material the covering having pores the mean diameter of which is less than the mean diameter of the interstices between the particles of the core. The term " semi-conductor " is defined in the Specification. Gases and liquids are delivered to the core through conduits which extend through the covering and lead to longitudinal or transverse passages in the core, and similar discharge passages for reaction products may lead to discharge conduits in the covering. The inlet and exit passages in the core intercommunicate only through the pore spaces, Alternatively, the exit passages may be omitted, and reaction products escape through an opening in the covering. In large electrodes, the inlet and outlet passages may intermesh in the core. The liquids and gases may be introduced into the electrode as reagents, catalysts, depolarizers or solvents. Liquid electrolyte permeates the pores of the covering which acts as a filter or diaphragm. The particles of the core are preferably of equal size, e.g. being spherical, or may be metal particles which do not exceed 300 microns in length in one at least of the three azial directions or may be filamentons or other regular shape. Where the core particles are of a conductive material, they may have a semi-conducting coating, formed by the reaction of the core material with the gas during operation. At any rate, the interstices in the core should be of a size to permit gas to pass through them at a pressure of 0À05 Kg. sq. cm. above atmosphere. In one example, in which a sulphuric acid solution of chromium sulphate is electrolytically regenerated to produce a sulphuric acid solution of chromic acid and chromium sulphate, the solution is employed as electrolyte between vertical stainless steel cathodes and vertical anodes comprising a core of sintered fine lead shot and a covering of a plastic powder, e.g. polyvinyl chloride, (PVC), sintered to the core, air being fed to the anode to remove chromic acid and oxygen formed at the lead core. The PVC covering prevents reduction of the chromic acid. In another example, a fuel cell employs a hydrogen electrode, e.g. of zinc, in an alkaline electrolyte and an electrode having a core of sintered copper or nickel particles of average diameter 60 microns, the covering consisting of sintered particles of the same metal of smaller size, e.g. of less than 30 microns average diameter. Oxygen is supplied to the electrode through which electrolyte continually passes.
Patent GB-354353-A (GB)
Title: Improved means for removing lids from paint tins and other containers
IPC: B65D43/02
Filed: 1930-05-03
Abstract: 354,353. Lever-lid tins. AYERS, T., 29, Wandle Road, Mitcham, Surrey. May 3, 1930, No. 13655. [Class 125 (iii).] Relates to pivotal lever devices attached by links to lever-lid tins for opening purposes. According to the invention the lever 1 normally lies adjacent the container 2 and is formed with a lid-engaging extremity 5 which is normally near the rim of the container and a pressure-applying extremity 4 which when not in use lies below the link 3.
Patent GB-776356-A (GB)
Title: Improvements in or relating to the electrolytic preparation of alginic acid
Filed: 1954-05-11
Abstract: 776,356. Electrolytic production of alginic acid; electro-osmosis. TORGERSEN, H. May 11, 1954 [May 16, 1953], No. 13785/54. Class 41. Alginic acid is electrodeposited on the anode of a cell containing an alkaline solution of salts of alginic acid and having a diaphragm of non- conducting material between the anode and cathode, the diaphragm assuming a negative potential relatively to the electrolyte and water being preferentially passed through the diphragm towards the cathode to partially dehydrate the alginic acid simultaneously with its deposition. As shown, the cell 1 has a rotating anode 3 of graphite or magnetite and a concentric perforated, sheet steel cathode 2 against which rests a textile diaphragm 4 of cotton canvas, sail canvas, cellulose, or asbestos. Alkaline alginate solution, prepared by extracting crude alga solution with alkali containing some carbonate provided by the addition either of carbon dioxide or sodium carbonate, is fed after filtering to the cell at 7, the liquid level being maintained at 8 by the overflow 11. The alginic acid deposited on the anode is freed from adhering alginate solution by a roller 10 pressing on the coating which is stripped off by the scraper 9. Alkali hydroxide formed in the cathode space together with water-soluble impurities in the alginate solution are withdrawn through the outlet 12 and used for the preparation of more alginate solution which, together with the overflow at 11 and alginate removed from the roller 10 by the scraper 13, is recycled to the cell at 7. Several such cells may be arranged in cascade.
Patent GB-910490-A (GB)
Title: Removal of coloured impurities from and production of a crystalline complex of, p.p-isopropylidenediphenol
IPC: C07C37/20
Filed: 1961-04-17
Abstract: The invention comprises a 2:2 - bis - (4 - hydroxyphenyl)propane/isopropyl alcohol crystalline complex and a method of removing coloured impurities from the bisphenol by reacting it (as a crystalline product) with the alcohol, converting the reaction mixture to a slurry of the complex, separating the latter and dissociating it, e.g. under vacuum at 70-80 DEG C., into isopropyl alcohol and bisphenol crystals.
Patent GB-310979-A (GB)
Title: High frequency thermionic valve amplifier
IPC: H03F1/08
Filed: 1929-05-04
Abstract: 310,979. Ardenne, M. von. May 5, 1928, [Convention date]. Vacuum tubes.-In a multiple-stage highfrequency amplifying valve 5 employing resistance-capacity coupling, microphonic howling and other disturbances are reduced by so designing the amplifier that it is inefficient at low frequencies. The coupling condenser C between the stages is of such capacity (say between 0.00006 and 0.00009 m.f.) that its impedance at high frequency is low compared with the grid-circuit impedance of the next stage, whilst at low frequency, the reverse obtains. The grid leak of the second stage may have a resistance of 300,000 ohms and the grid-cathode capacity of this stage is kept as low as possible. The Specification, as open to inspection under Sect. 91 (3) (a), states that the valve may be screened by an earthed metal cylinder placed over the envelope. This subject-matter does not appear in the Specification as accepted.
Patent GB-214856-A (GB)
Title: An improved spout for oil drums
IPC: B65D25/40
Filed: 1923-12-06
Abstract: 214,856. Roberts, R. Dec. 6, 1923. Venting - apparatus.- An air vent c fitted to a spout for oil drums &c. lies in a U-shaped groove d in the neck a<1>, around which is fitted a cork or like sleeve b.
Patent GB-669921-A (GB)
Title: Improvements in and relating to optical projection apparatus
Inventor: BOWDEN BERTRAM VIVIAN
IPC: G03B21/16
Filed: 1949-05-26
Abstract: 669,921. Optical-projection apparatus. D. & P. STUDIOS, Ltd. Jan. 2, 1950 [May 26, 1949], No. 14131/49. Class 97 (i). To cool a lens in the optical system liquid is passed through a passage 25 at one side of the lens, the passage being enlarged, at its ends, in the direction of the optical axis, to form tanks 26, 27 to assist in obtaining an even flow. The liquid enters the tank 26 from one side and leaves from the other side of the tank 27. The lens 3<SP>1</SP> is secured in a recess 15 in the wall 13 by a ring 21. A filter '61 may be inserted in the passage. It may be. formed integrally or separ. ately with knife edge strips 12 at its ends. The liquid may absorb infra-red radiation, the absorbtion being increased by dissolving ferrous or copper salts. A sodium nitrate solution may be used to absorb ultra-violet radiation. The projection beam may be coloured by using a dye solution.
Patent GB-507965-A (GB)
Title: Improvements in or relating to electric earth induction compasses
IPC: G01C17/36
Filed: 1938-05-12
Abstract: 507,965. Magnetic tests ; earthinductor machines. SPERRY GYROSCOPE CO., Inc. May 12, 1938, No. 14142. Convention date, May 12, 1937. [Class 37] [Also in Group XXXV] An earth-inductor compass comprises gyroscopically stabilized A.C. voltage-generating means employing the carth's magnetic field for excitation, and an A.C. voltage-generating means employing a magnetic field other than the earth's field, the two generating means being synchronously driven and connected to a phase-difference indicator. A motor 1 drives a Z-shaped bar of magnetic material having upper and lower horizontal arms 3, 4 and a vertical connecting part 5. As this bar rotates in the carth's field the arms 3, 4 are alternately directed North and an alternating flux is produced in the vertical portion 5, so that an alternating current is induced in a surrounding coil 6 which is connected, through an amplifier 8, to the rotor of a phase meter 11. This rotor is arranged to turn a compass card 12 with respect to a lubber mark 12<SP>1</SP>. A permanent or electromagnet 13 is mechanically coupled with the bar 5 to rotate inside a three-phase stator 14 and thereby generate a three-phase current of the same frequency as the single-phase current in the coil 6. The stator 14 is connected to the stator 15 of the phase meter 11 and produces a magnetic field rotating at the same speed as the magnet 13. The rotor 2 of the phase meter, and therefore the compass card 12, takes up a position depending on the phase of the current in the coil 6, which is determined by the direction of the earth's field. Leads 17, 18 may be taken to repeater compasses. The magnetic bar 3, 4, 5 is incorporated in the brass or other non-magnetic gyroscope rotor 20, Fig. 2, fixed on a shaft 21 rotatable within a non- magnetic casing 19. The rotor 20 is driven by a motor 1 which may be of the type shown in Specification 504,963, [Group XX]. The coil 6 is carried by the casing 19 so as to surround the vertical part 5 of the magnetic bar. The permanent magnet 13 is fixed on the shaft 12, the three-phase stator 14 being carried by the casing 19. The casing 19 is mounted in gimbal rings 23, 26 which are mounted in standards 28. A laminated stator ring 28<SP>1</SP> having a three-phase winding 29 is carried by a U-shaped frame 30 which is pivoted on pivots 31 on the outer gimbal ring 26. The winding 29 co-operates with an inductor 25 to precess the rotor 20 to the vertical, as described in Specification 492,670, [Group XX]. As the frame 30 may swing from the vertical during turning of the craft and thereby tend to precess the rotor 20 from the vertical, the current for the winding 29 may be cut off during turns by means of a turn indicator operating a switch 32.
Patent GB-1465191-A (GB)
Title: Automatically controlled crystal growth
IPC: G05D23/00
Filed: 1974-03-29
Abstract: 1465191 Automatic control NATIONAL RESEARCH DEVELOPMENT CORP 4 April 1975 [29 March 1974] 14162/74 Heading G3N Crystal growing apparatus includes an electrically heated crucible and a rod for pulling a crystal from a melt. The crucible is continuously weighed to derive a control signal used to adjust the heat supplied to the melt and thereby control the crosssectional area of the crystal. The heater current is also measured to produce a correction component which is added to the control signal. As shown, a crystal 9 is pulled from a melt 3 in a crucible 5 by a rod 1. The crucible is surrounded by a susceptor 7 heated by eddy currents induced by an RF coil 11, and supported on a load cell 21 producing a signal indicative of changes in weight of the melt 3 due to crystal formation. The load cell signal is subtracted from a fixed signal representing initial weight in a subtractor 25 the output from which is fed to a comparator 27 together with a signal from a potentiometer device 29 responsive to the position of the rod 1 to produce a voltage representing the expected weight of a uniformly growing crystal. Any difference signal produced by the comparator 27 adjusts the temperature of the melt 3 by controlling the power delivered to the coil 11. Variations in the current in the coil produce varying magnetic levitation forces on the crucible 5, introducing error into the weight measured by the cell 21. To correct this, the current is sensed by a transformer (35) in a correction circuit 31, Fig. 2 (not shown), and converted by a rectifier bridge, smoothing circuit and potentiometer, into a compensating voltage which is added into the control loop by a circuit 33. Alternative locations for the adding circuit are shown, 33a-d. In another embodiment, the weight signal from the subtractor 25 is differentiated and then compared with a constant value in the comparator 27.
Patent GB-769969-A (GB)
Title: Improvements in and relating to bakery unit loading and/or unloading means
IPC: A21B3/07
Filed: 1955-05-17
Abstract: 769,969. Endless-belt conveyers. BAKER PERKINS, Ltd. May 17, 1955 [May 17, 1954], No. 14182/55. Class 78 (1). Means for loading bread tins 17, Fig. 3, loaves or the like from a conveyer 12 on to the shelves 11 of carrier racks 10 of a bakery prover, oven or cooler unit and for unloading the same on to a conveyer 13, or another bakery unit, after they have passed through the prover, comprise pusher members 16, 18 having a varying velocity work stroke which is sinusoidal in character. The member 16 includes a tin-engaging member 19 which is connected by upwardly and outwardly inclined wing sections 20 to reciprocable rods 21, moving between rollers 24a. The pusher member 18 comprises a rectangular frame which is connected rigidly to a beam 44. This beam is secured to the upper faces of blocks 35 by means which allow its vertical adjustment. The blocks 35 are secured to reciprocable rods 27 moving between rollers 25a. Similar blocks 38 are mounted on the rods 21. Pins 34a, 37a projecting outwardly from the blocks 35, 38, respectively, are engaged by the outer ends of connecting rods 33, 37, respectively. The inner ends of the rods 37 are connected by pins 36 (1) to connecting rods 34 which are pivotally mounted on crankpins 32 carried by cranks 31 on a shaft 28, and (2) to cranks 39 on shafts 40 which are in alignment with the shaft 28. The pins 32 engage also the connecting rods 33. Either of the shafts 40 or the shaft 28 can be driven.
Patent GB-1322665-A (GB)
Title: Circuit arrangements for associating numbers in one number system withnumbers in the same or a different number system
IPC: G08B3/10
Filed: 1971-05-11
Abstract: 1322665 Selective signalling; counting apparatus UNINORM ANSTALT 11 May 1971 [27 May 1970] 14277/71 Headings G4A and G4H Two counting chains are connected by a gate arrangement to produce one or more points of discontinuity in the counting sequence of one chain. In a first embodiment, the two chains are driven by a common pulse source, the second chain being reset to zero in response to particular counts of the first chain, detected by gates connected to the stages of the first chain. A second embodiment differs in that the second chain is replaced by two sub-chains, the first of which is driven with the first chain and the second of which is driven on occurrence of particular counts in the first chain, occurrence of another particular count in the first chain resetting the first sub-chain to zero and the second sub-chain to a non-zero number. A third embodiment differs from the first in that occurrence of various particular counts in the first chain sets a bistable which disconnects the pulse source from the second chain and connects the second chain to be driven from another much higher frequency source, the bi-stable being reset again in response to either of two gates responsive to the stages of the second chain and also (in the case of one gate) to the highest order stage of the first chain. The first embodiment can be modified by also having the first chain responsive to the second in a similar way. In a hospital signalling system, locations are addressed by the first chain in turn over common signalling wires, input switch states being gated to these wires when the required address entered on push-buttons agrees with the count of the second chain, the second chain skipping numbers not in use as addresses due to the control of the second chain by the first as above.
Patent GB-1482719-A (GB)
Title: Insulated roof
IPC: E04D13/04
Filed: 1975-04-08
Abstract: 1482719 Roofing stricture NORRBOTTENS JARNVERK AB 8 April 1975 [10 April 1974 5 March 1975] 14298/75 Heading E1W  An insulated roof structure comprises sheet metal panels 1 with a soft thermal insulation layer 5 abutting the underside, the panels having angular sectioned edges 2 raised above the general plane of the panels, and adjacent panel edges being connected together and supported by beams 3 which extend above and below the general plane of the panels. The panels are stiffened by longitudinal or transverse embossments 4. The beams 3 may be integral with or separate from the panels 1. The panels may overlap or be spaced apart, Fig. 6, and overlap a connecting member 12 supported by a beam 11, a capping section 14 covering the joint. A drainage duct may be formed between the capping section 14 and the connecting member 12 or between the overlapping edges of adjacent panels, Fig. 10 (not shown). A diffusion barrier 6 and support joists 7 may also be provided.
Patent GB-1172843-A (GB)
Title: Improvements in or relating to Calculating Machines.
Inventor: LLOYD JOHN GEORGE
IPC: G06F7/48
Filed: 1966-03-31
Abstract: 1,172,843. Electronic keyboard calculators. BELL PUNCH CO. Ltd. 23 March, 1967 [31 March, 1966], No. 14300/66. Heading G4A. In an electronic calculating machine having a ten-key digit keyboard, a visual register comprising a plurality of pulse-counting stages connected to visual display means and a store register also comprising a plurality of pulse counting stages, means are provided responsive to depression of an interchange function key to interchange the contents of the two registers a digit at a time. As shown (Figs. 4 and 4a), successive operations of selected ones of the digit keys 11a of an electronic keyboard calculator (Fig. 1, not shown) cause corresponding numbers of pulses to be fed by way of line 28 into successive stages R12-R1 of a visual register 29 the contents of which are displayed by means of number-indicating tubes 6 (Fig. 1, not shown). Stages R13 and VDPC of the register 29 are used respectively for overflow and decimal point position counting. The particular stage to which a digit is fed is determined by coincidence in timing of a pulse t12 from a multicathode timer circuit 18 (Fig. 3, not shown) with one of pulses T1-T12 from a further multicathode timer circuit 15 (Fig. 3, not shown). In order to interchange the contents of visual register 29 with one of two store registers 38, 39, as selected by a switch 37, successive corresponding stages of the two registers concerned are counted up by groups of ten pulses originating from line GD at gates 41 and 125 and carry signals CO1, CO2 emitted from carry store circuits 33, 30 as respective stages of the register pass through the zero condition are used at gates 129 and 130 to detect which of the digits stored in said corresponding stages is the greater, to set a bistable circuit 131 accordingly and to cause a buffer stage 135 to store their numerical differences. Immediately after the counting up of each respective pair of corresponding stages by a first group of 10 pulses, a second group of 10 pulses is counted out. By means of gates 34 and 132 to which the output of the bi-stable circuit 131 is applied and the buffer stage 135 which is counted up by the ten pulses and the output B of which changes the polarity of the output y when the zero condition B = O is reached, a number of pulses equal to said numerical difference is fed to the stage storing the lesser of the two digits and a number of pulses equal to the tens-complement of said difference to the stage storing the greater of the two digits. If it is only required to transfer the contents of the visual register to a selected one of the store registers 38, 39, then a gate 155 may cut off application of pulses to the respective stages of the visual register as soon as the corresponding carry signal CO1 has been produced. The calculator and its operation is described more fully in the abridgment of Specification 1,172,842.
Patent GB-220997-A (GB)
Title: Improvements in or relating to linear measures or scales
IPC: G01B3/08
Filed: 1923-05-30
Abstract: 220,997. Hoare, F. H. May 30, 1923. Linear-dimension gauges. - In a measure of length or calliper gauge of the type comprising a body portion 5 and a graduated sliding portion 6, an index 14 is arranged on the part 5 so that it reads against the zero of the scale at the end of the slide 6, when the measure is closed up. An abutment 12 may be fixed to the end of the slide, in which case the index 14 will project beyond the end of the part 5 by an amount equal to the thickness of the abutment. The part 5 may be graduated, and the device may be used as in inside or outside calliper gauge. A socket 15 enables extension pieces to be added to the body 5 to make a measure of greater length. In a modification the extension pieces are arranged to telescope into one another and into the body 5. The extension pieces may be hinged to the body portion. The measure may he formed as a walking stick.
Patent GB-1503405-A (GB)
Title: Vehicular exterior rearview mirror
IPC: B60R1/064
Filed: 1976-04-08
Abstract: 1503405 Rearview mirrors ITT INDUSTRIES Inc 8 April 1976 [15 April 1975] 14325/76 Heading B7J An external rearview mirror, mountable on a vehicle for control from the interior of the vehicle, comprises a plastics housing 20 integral with a two-part straight tubular arm 18, 48 frictionally rotatable about its longitudinal axis in a mounting boss 10 securable by means not shown to the coachwork G of a vehicle so that the arm enters to the vehicle interior; and a reflecting element 24 pivotally mounted at coaxial positions 22 in the housing 20 about an axis transverse to the axis of the arm 18, 48; wherein the element 24 is pivoted by transmission means 34, 32, 30 of which 34 extends from the inside of the housing and through to arm 18, 40 so as, in use, to be within the vehicle. The transmission means comprise a shaft 34 having thereon a worm screw 32 engaging a toothed sector 30 on the reflecting element 24. The support arm comprises an inner section 18 rigid with the housing and connected by a dog clutch 52 with an outer section 48 having at its end an integral control handle 50 for rotating the arm and the housing. The shaft 34 has mounted on its outer end a control knob 54 which retains to dog clutch in its engaged position by abutting against the handle 50. The shaft 34 is prevented from axial movement in the housing by fork arms 38a, 38b on the latter embracing the ends of the worm screw 32. The interior of the mounting 10 and the exterior of the arm section 18 are frusto-conical at 12, 16, in order to produce a frictional fit. The section 18 is connected by a weakening V- groove 57 with the housing to permit ofbreaking- away in event of an impact. Similarly the shaft 34 has a V-groove 58 for the same purpose. The mirror assembly is provided with an ornamental boss 60 for affixing to the interior coachwork G, around the arm section 48.